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通过在池塘循环水净化区和湖泊网围养殖区实施生态放鱼,进行水质净化,结果表明,在调查的范围内,随着放养生物量和生物产量的增加,化学需氧量、总磷、总氮、氨氮、亚硝酸盐等指标呈降低趋势,水质指标达到水产养殖水质要求和太湖流域池塘养殖水排放标准,而且减少了高温损失,增加了养殖经济效益。但放养生物量和生物产量对养殖效益指标的影响不是唯一决定因素。进一步研究渔业水源管护制度、适宜的生态放鱼品种数量及规格、创新经营管理方式等,有利于发挥“护渔活水”的生态养护功效,促进生态渔业的可持续发展。
The results showed that with the increase of stocking biomass and biomass production, chemical oxygen demand, total phosphorus, total phosphorus, total phosphorus, Total nitrogen, ammonia nitrogen, nitrite and other indicators showed a downward trend, water quality indicators meet the aquaculture water quality requirements and Taihu Lake Basin pond aquaculture water discharge standards, but also reduces the high temperature loss and increase aquaculture economic benefits. However, the impact of stocking biomass and biological production on indicators of benefits of farming is not the only determinant. Further research on the system of management and management of fishery water sources, the appropriate number and size of ecological fish-releasing breeds, and innovative management methods will help to bring into full play the ecological conservation effect of “protecting fish and replenishing water” and promoting the sustainable development of ecological fisheries.